#version 450 core

#pragma include ./shared.glsl
#pragma include ../misc/camera.glsl

in FragmentData fragmentData;

layout (location = 1) uniform vec2 uRings;
layout (location = 2) uniform vec2 uMarker;
layout (location = 3) uniform vec4 uValue;
layout (location = 4) uniform float uProgress;
layout (location = 5) uniform float uSize;

out vec4 outColor;

#pragma include ./shared_frag.glsl

void main() {
    /* setup */
    float t_opn     = clamp(uProgress, 0.0, 1.0);
    float t_cls     = clamp(uProgress - 1.0, 0.0, 1.0);
    float r         = length(fragmentData.texCoords);
    float zoom      = pow(length(uCamera.view[0].xyz), 0.5);
    float angle     = calcAngle(fragmentData.texCoords, VEC_HORZ);

    /* marker */
    float m         = calcMarker(t_opn, angle, r, zoom);

    /* rings */
    float f         = calcRingsAnimation(t_opn, angle, 0.1);
    float t_opn_rad = clamp(2.0 * t_opn, 0.0, 1.0);
    float value     = animLinear(uRings[0], uRings[1], uValue[3]);
    float r0        = 0.25 * calcRing(t_opn_rad, f, uRings[0], r, zoom);
    float r1        = 0.25 * calcRing(t_opn_rad, f, uRings[1], r, zoom);
    float v         = 0.75 * calcRing(t_opn_rad, f, value,     r, zoom);

    /* alpha */
    float a         = calcAlpha(t_opn, t_cls);

    /* put together */
    vec3 rgb        = vec3(1.0);

    outColor        = vec4(rgb, (v + r0 + r1 + m) * a + uSize * 0.0001);
}